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52245288 = 233219181211
BaseRepresentation
bin1100011101001…
…1001100101000
310122022100001200
43013103030220
5101333322123
65103444200
71203035424
oct307231450
9118270050
1052245288
1127544727
12155b6660
13aa93394
146d1db84
1548c0143
hex31d3328

52245288 has 96 divisors (see below), whose sum is σ = 150477600. Its totient is φ = 16329600.

The previous prime is 52245283. The next prime is 52245299. The reversal of 52245288 is 88254225.

52245288 is a `hidden beast` number, since 522 + 4 + 52 + 88 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (52245283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247503 + ... + 247713.

It is an arithmetic number, because the mean of its divisors is an integer number (1567475).

Almost surely, 252245288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52245288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75238800).

52245288 is an abundant number, since it is smaller than the sum of its proper divisors (98232312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52245288 is a wasteful number, since it uses less digits than its factorization.

52245288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 416 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 52245288 is about 7228.0902041964. The cubic root of 52245288 is about 373.8370800404.

The spelling of 52245288 in words is "fifty-two million, two hundred forty-five thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 114 152 171 181 211 228 342 362 422 456 543 633 684 724 844 1086 1266 1368 1448 1629 1688 1899 2172 2532 3258 3439 3798 4009 4344 5064 6516 6878 7596 8018 10317 12027 13032 13756 15192 16036 20634 24054 27512 30951 32072 36081 38191 41268 48108 61902 72162 76382 82536 96216 114573 123804 144324 152764 229146 247608 288648 305528 343719 458292 687438 725629 916584 1374876 1451258 2176887 2749752 2902516 4353774 5805032 6530661 8707548 13061322 17415096 26122644 52245288